More comments on setting names, added the #! line and chmod +x comment

src/makeBaseApp/top/exampleBoot/ioc/README@Common

@@ -1,7 +1,9 @@
 To start the ioc from this directory execute the command
-
     ../../bin/_ARCH_/<appname> st.cmd
 
-You may need to change the name of the .dbd file given in
-st.cmd's dbLoadDatabase command before starting the ioc.
+Alternatively make the st.cmd file directly executable with
+    chmod +x st.cmd
+and check the executable name on the first line of the st.cmd file 
 
+You may need to change the name of the .dbd file given in the
+st.cmd's dbLoadDatabase() command before starting the ioc.

src/makeBaseApp/top/exampleBoot/ioc/st.cmd@Common

@@ -1,9 +1,17 @@
-dbLoadDatabase("../../dbd/example.dbd",0,0)
-registerRecordDeviceDriver(pdbbase) 
+#!../../bin/_ARCH_/_IOC_
+## The names of the binary above and .dbd file below will be incorrect
+## unless you used the same names for the ioc and the app directory.
+dbLoadDatabase("../../dbd/_IOC_.dbd",0,0)
+
+registerRecordDeviceDriver(pdbbase)
+
 dbLoadRecords("../../db/dbExample1.db","user=_USER_Host")
 dbLoadRecords("../../db/dbExample2.db","user=_USER_Host,no=1,scan=1 second")
 dbLoadRecords("../../db/dbExample2.db","user=_USER_Host,no=2,scan=2 second")
 dbLoadRecords("../../db/dbExample2.db","user=_USER_Host,no=3,scan=5 second")
 dbLoadRecords("../../db/dbSubExample.db","user=_USER_Host")
+
 iocInit()
+
+## Start sequence programs here, if there are any
 #seq sncExample,"user=_USER_Host"